Piston ring



Apg. z3, 1927.v

` vE. BROWN lHST-0N RING Filed Aug. 3d.V 1925 crearne 'T J GTF 'WASEINGTON, DS'IRICT QF COLUMBIA.

espina/@iw een august so, was. serial 1w, 132,498.

known pie ci the inventvliicli will i within lthe 'ring ai, end one "which Will ann vlinder Wall. oft the invention is o; al ring7 the construction of the sections lwing sncli that one section will exert :in outward pressure on its cooperating 'onto canse ring to closely engage f inici' Wall..

i still ier object of the invention is o prow/'ide a sectional ring so constructed the sections\viil be hold close enageinen; with each other at all times, elimiating any possiniity of. the sections becomdisengaged to rattle or allow oil to pass the ring. With the foregoing and other objects in View which wilt appear es tne description proceeds, the inrention resides in the cornH bination and arrangement parte and in tion autoi in invoert to provide a the details oi construction hereinafter de- ,gcrcd and ciaimcd, it being understood that changes in the nicole embodiment of the invention l oecd, may be made i hin the o f what claimed, without l ,Y departing rroin the seirit the invention.

Referring to the drawings: Figure "i is transverse sectional View through a ring;y ysnowing the sarne as `inositioned. on a piston and held Within a cylinder.

Figure 2 through portion of' Figure 25 is en enlarged e nrorlilierl ferr Figure 4.- is e. .stiil fuiiner or invention.

Referring' to the drawing in detail, the gisten ringv rfniloodies an inner section 5 and en outer section 3, the sections having conical surfaces T extending iroin the edges ""liereoi" to points suhstzini elly intermediate oi the ae lel bled ring, the coninier-ging to cylindrical surfinally merge into conical snr 'is an enlarged sectionai View the ring.

sectional View ring.

in odiicd forni Y :sont invention relates to piston.

As shown by Figure 8 of the drawing, the inner section 10 is providedwith a conical surface 11 and a substantially cylindrical surface 1Q, the upper and lower ends of the substantially cylindrical surface 12 6l curved as at 13, the surface 13 at the lower end of the. surface '12 merging into a conicd.` surface A, which surfaces cooperate with correspondingly shaped surfaces formed on theouter section 15. Y i0 in the form of the invention as lshown oy Figure 4, the ring embodies sections wherein the cooperating surfaces thereof 'x are step'liike in `formation, the ring Sections having conical surfaces 16 and 17, the coni-v 65 cal surface 16 terminating in a substantially cylindrical surface 18, spaced from the inner edge of the inner ring section. y

A'A cylindrical surface 19 connects the coni- I cal surfaces of the inner section whilel a 'I0 cylinder surface 20'connects theV conical surfaces oi the outer section of the ring.

From' the foregoing it will be seen that due tothe construction shown and described, the conical surfaces contacting with reach- F5 other, will cause the sections to move with respect to each other insuring a close-fit bei tween thering and Walls of the ring groove in which it is positioned, and Will also cause I the outer ring section to expand to closely engage the cylinder Wall in which the piston is movino'.

I claim: j

1. A piston ring including an inner section and an outer section, said inner section having upper and lower outer conicalf surf aces and having a substantially c'lindrical surface connecting the conical sur aces, said outer section having upper and lower inner conical surfacesoonnected by a substantially cylindricalsnrface, the conical surfaces cooperating to spread thej ring vertically, and said cylindrical surfaces being spaced apart to allow movement of one section with respect to the othero section.

f 2. A piston ring including an inner Sec- 4 amical surface intersecting the end of the section, said outer section raving upper and lower inner conical Surconnected by 'a substantially cylndr ni surface, the conca surfaces cooperating o the ring vertically, and said cyrrrea-asurfaces being spaced apart to allow movement of one Section with respec to the other secon. y

In tsztimony that I claim the foregoing 10 :1S my mvn, I have hereto xed my signature.

4 ED BROWN. 

